The use of force expert witness may provide an expert opinion in questions regarding the proper use of force in response to violent and threatening activity. Dr. Philip Hayden will testify in the case against a retired Tampa police captain accused in the shooting death of Chad Oulson. Curtis Reeves has pleaded not guilty to charges of second-degree murder in the 2014 Wesley Chapel movie theater incident. Oulson allegedly refused to stop texting during movie previews. Movie goers said they saw popcorn thrown in the air and heard a gunshot. Reeves says he was attacked by Oulson and acted in self-defense.